Back to EveryPatent.com
United States Patent |
5,001,814
|
Lucassen
,   et al.
|
March 26, 1991
|
Apparatus for opening fiber bales of spinning material
Abstract
Opening and blending apparatus for removing fiber from a row of bales has
spaced parallel drums carrying disks and the like illustrated in spaced
overlapping relation and being driven in opposite directions at different
speeds. Spaced grid bar members may be offset in a gap between the drums
and terminate in free ends. The grid rods may extend continuously from
lateral fixation bars and may be connected by central elements.
Inventors:
|
Lucassen; Guenter (Haltern, DE);
Schmidt; Reinhard (Gescher, DE)
|
Assignee:
|
Hergeth Hollingsworth GmbH (Dulmen, DE)
|
Appl. No.:
|
323581 |
Filed:
|
March 14, 1989 |
Foreign Application Priority Data
Current U.S. Class: |
19/80R; 19/81 |
Intern'l Class: |
D01G 007/00 |
Field of Search: |
19/80 R,81,97,97.5,82,85
|
References Cited
U.S. Patent Documents
4357737 | Nov., 1982 | Marx | 19/80.
|
4623099 | Nov., 1986 | Vosbein et al. | 19/80.
|
4756059 | Jul., 1988 | Temburg | 19/80.
|
4780933 | Nov., 1988 | Pinto et al. | 19/80.
|
Foreign Patent Documents |
2819292 | Nov., 1979 | DE.
| |
821548 | Apr., 1981 | SU.
| |
437242 | Oct., 1935 | GB.
| |
Primary Examiner: Schroeder; Werner H.
Assistant Examiner: Neas; Michael A.
Attorney, Agent or Firm: Bailey & Hardaway
Claims
What is claimed is:
1. Apparatus for opening fiber bales of spinning material such as cotton,
comprising:
a pair of reducing milling rollers including milling disks, disposed in
mutually parallel relationship in a housing and rotating in opposite
directions;
grate rods being arranged between said milling disks of the milling
rollers;
a gap formed by the reducing rollers;
a suction channel above said gap provided for the removed fiber material;
and
means rotating said milling rollers at different speeds.
2. Apparatus for opening fiber bales of spinning material such as cotton,
comprising:
a pair of reducing milling rollers disposed in mutually parallel
relationship in a housing;
wherein each milling roller of said pair of milling rollers rotates in a
direction opposite that of the other and at a different speed;
grate rods being arranged between said milling disks of the milling
rollers;
a gap formed by said reducing rollers;
a suction channel above said gap provided for the removed fiber material;
wherein said milling disks of the milling rollers overlap.
3. The structure set forth in claim 2, wherein said grate rods are mutually
offset between said milling disks of the milling rollers and wherein said
grate rods terminate in free ends.
4. The structure set forth in claim 2, wherein said grate rods interconnect
by central elements.
5. Apparatus for opening fiber bales comprising:
spaced parallel rollers;
spaced opening means carried by said rollers;
means mounting said rollers for rotation in opposite directions;
grate rods carried in spaced relationship between said spaced opening
means;
a suction channel for removal of fiber material removed from the bales by
said opening means; and
means driving said rollers in opposite directions and at different speeds.
6. Apparatus for opening fiber bales comprising:
spaced parallel rollers;
spaced opening means carried by said rollers;
means driving said rollers for rotation at different speeds;
grate rods carried in spaced relationship between said spaced opening
means;
a suction channel for removal of fiber material removed from the bales by
said opening means; and
said opening means being carried in spaced overlapping relation on said
rollers.
Description
BACKGROUND OF THE INVENTION
This invention relates to apparatus for opening and blending fiber from
bales such as illustrated in U.S. Pat. Nos. 4,514,881, 4,595,149,
4,623,099, 4,715,722, 4,771,513, 4,774,758 and 4,780,933. Objects of the
invention include increased opening or greater unentangling of the fibers
with improved transport thereof in a suction channel.
The invention relates to an apparatus for opening fiber bales of spinning
material, e.g. cotton, comprising two reducing means, e.g. milling
rollers, disposed in mutually parallel relationship in a housing, the
reduction of a bale or a row of bales being performed from the top.
Between the milling disks of the rollers, there are provided grate rods
which adjoin the bale surface and by which the reduction of the fiber
material of the bales is supported. Above the gap formed by the reducing
means, a suction channel provided for the removed fiber material may
extend lengthwise of the reducing means.
There have been known various designs of opening devices of the foregoing
type. In view of the rapidly rotating milling rollers used as a reducing
means, it is often impossible to inhibit the entrainment of fiber clusters
opened insufficiently so that the suction means not only receives
disintegrated fibers but also a higher or lesser amount of fiber clusters.
SUMMARY OF THE INVENTION
It is an object of the invention to provide an opening means of the type
specified above by which the opening operation is improved, intensified
and more accurately performable in the sense of a fiber disintegration or
unentanglement. The invention is characterized in that the reducing means,
such as milling rollers are rotating at different speeds.
Due to the fact that the speed or peripheral speed of one milling roller is
higher or lower than that of another cooperating therewith, the opening
operation may be substantially improved. As a result of the relative
movement between the teeth, combs etc. of the milling disks of the
rollers, the larger fiber flocks are drawn apart, and the fiber lumps are
additionally disintegrated. Due to the higher peripheral speed of the more
rapidly rotating milling roller, the coherent fiber clusters are drawn
apart and disintegrated. Now as before, an entrainment of the fibers is
kept within limits by the grate.
According to another feature of the invention, the milling disks, seen from
the front, may be arranged to overlap. Due to such an overlapping position
of the milling disks of the milling rollers rotating in opposite senses or
directions, the disintegration of the fiber during the reduction of the
bales is additionally improved. Further, the opened fibers are more safely
or satisfactorily thrown towards the vertical between the milling rollers.
Thus, a more concentrated transport of the disintegrated fibers to the
suction channel or suction funnel is insured. An improved disintegration
effect and output concerning the fiber material removed from the bales is
accomplished. The opening of the flocks is substantially intensified.
With regard to the milling means, the grate is of a design in which the
grate rods being mutually offset between the milling disks, terminate in
free ends. In special cases, the grate rods may continuously extend from
one side to the other, and may be connected by central elements extending
obliquely or being offset relative to the longitudinal axis of the milling
roller.
BRIEF DESCRIPTION OF THE DRAWINGS
The construction designed to carry out the invention will be hereinafter
described, together with other features thereof.
The invention will be more readily understood from a reading of the
following specification and by reference to the accompanying drawings
forming a part thereof, wherein an example of the invention is shown and
wherein:
FIG. 1 shows a schematic end view of an apparatus for opening fiber bales
according to the invention;
FIG. 2 shows a schematic plan view of the reducing means or reducing
elements according to line II--II of FIG. 1;
FIG. 3 illustrates a schematic end view of another embodiment of the
opening means of the invention;
FIG. 4 shows a schematic detail of a plan view of the reducing elements
according to line IV--IV of FIG. 3; and
FIG. 5 is a schematic, modified embodiment of the grate in connection with
the opening means of FIG. 3.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The opening means 1 of FIG. 1 for removing fibers from a bale row 2
comprises a housing 3 for a reducing means consisting of milling rollers 4
and 5 which are disposed rotatably in longitudinal direction of housing 3,
the milling rollers 4, 5 including support bodies 6 and 7 of a tubular
design for a number of milling disks 8 and 9. The sense or direction of
rotation of milling rollers 4, 8; 5, 9 is opposite, as indicated by the
arrows, and the rollers are accommodated in an internal housing 11 which,
in the center plane of the milling rollers 4 and 5, forms a channel 12 in
which a suction air current is effective. Milling disks 8 and 9 are
mutually offset in axial direction of the milling rollers. Beneath the
latter, the grate rods 14 and 15 being also offset mutually accordingly
are fixed to stationary bars 16 and 17 and are adjustable in height.
In the central longitudinal plane, the sense of rotation of the two milling
rollers 4 and 5 is directed upwardly and in the same direction. During the
reciprocation of housing 3 with the reducing means back and forth along
the bale row 2, the fiber material removed from the bales is thrown
upwardly and discharged through channel 12 by the suction current. The
speeds of the milling rollers 4 and 5 may differ from each other. Each
milling roller may be provided with a motor 20 and 21 driving by the
transmission members 22 and 23 the appertaining milling roller. Subject to
the prevailing demand, the speed of one milling roller may be higher or
lower than that of the other. A resultant relative movement between the
teeth of milling disks 8 and 9 involves an additional possible
disintegration of fiber flocks or clusters which, by the milling disks are
conveyed towards the suction channel 12. It is also possible to provide
one sole drive only by which, with a corresponding gear, a different speed
is imparted to each milling roller 4 and 5.
A modified form of the invention is illustrated in the embodiment of the
opening device 1a of FIG. 3 whose reference numerals are marked with the
additional notation a substantially corresponds to that of FIG. 1, the
salient difference residing in the fact that the diameters of the milling
disks of the milling rollers 4a and 5a are dimensioned such as to cause an
overlapping or coinciding, with respect to the central plane 19a of the
milling disks mutually offset in longitudinal direction of the milling
rollers, the free space between the milling disks being decreased. As a
result thereof, the fiber material removed from the bales is opened still
more safely and reliably. Moreover, the fibers may be thrown more
effectively in vertical direction to the suction channel 12a, it being
possible for the milling rollers 4a, 5a to be driven oppositely at the
same speed. The disintegrating effect is still intensified if, in
accordance with the embodiment 1 of FIG. 1, the milling rollers 4a, 5a are
driven in opposite senses at various speeds, such as explained in
connection with the former embodiment.
As obvious from FIG. 5, the grate rods terminating in a free end in case of
the embodiment of FIG. 4, and, in accordance with the offset milling
disks, being also offset in the direction of the longitudinal axis of the
appertaining milling disks, may be interconnected by a central element 25
so that from one bar 16a to the other disposed oppositely, the grate rod
extends continuously in forming one piece.
While a preferred embodiment of the invention has been described using
specific terms, such description is for illustrative purposes only, and it
is to be understood that changes and variations may be made without
departing from the spirit or scope of the following claims.
Top